Journal of Science and Application Technology (JSAT - Institut Teknologi Sumatera)
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IDENTIFIKASI KANDUNGAN MINYAK ALPUKAT SEBAGAI BAHAN BAKU INDUSTRI KOSMETIK
No full textThis research has been done regarding to the identification avocado oil (Persea americana.Mill) composition as raw material of cosmetic industry. The usage of the avocado in the West Sumatera is still limited, meanwhile, it has two functions which never known by people. It concerns about the amount of the flesh of avocado and the useness for staple and cosmetics. In this research, the researcher will choose high-yielding variety and local variety in Solok, West Sumatera. This is caused by Solok has a good potential which has a plenty of avocados per year which shown by the statistics Plants of food and Holticulture from West Sumatera at 2012 that Solok has a sharp amount of the production Avocado around 27.281 ton per year. In this research, the oil that is gotten by the process of extraction at the solvent uses a dark-green soxhlet. Then it will be achieved some amount of avocado oils from high -yielding variety at 5,31% and 16,11% on local variety from a wet-basis. On the other hand, it will be then achieved the characteristics of physic-chemistry from the extraction. The composition of fatty acid in the arrangement of Trigliserida can be found by making an early derivation by processing of Methyl Ester. This research shows that a high yielding veriety consists of caprilate acid (1,68%), caprate acid (1,93%), laurate acid (8,62%), miristate acid (3,92%), palmitate acid (20,53%), palmitoleate acid (1,08%), stearate acid (5,61%), oleate acid (26,34%), linolenate acid (4,59%). Baside that, for the local variety consists of caprilate acid (0,92%), laurate acid(9,41%), miristate acid (4,00%), palmitate acid (14,44%), palmitoleate acid (0,84%), oleate acid (14,81%), linolenate acid (1,36%), with the total of Trigliserida component from the avocado oil at 73,85% and 45,78% for a local avocado oil. At the result, the highest percentage of fatty acid is oleate acid, basides, the composition of laurate and palmitate acid is big enough while both fatty acid of high-yielding and local variety come to a laurin-palmito-olein
Landslide Density Based on Time Series
Get PDFAbstract—Landslide density analysis based on a temporal landslide distribution over three different years was conducted in Kundasang, Sabah, Malaysia. The analysis involved landslides that occurred in 1984, 2009 and 2012. The objective of this study is to examine the relationship between the physical parameter and landslide density analysis based on temporal landslide distribution. This is the preliminary study for landslide hazard assessment. Landslides in these three assessment years were identified based on aerial photographs interpretation. The landslides detail has to be digitised as points and the point density was calculated using 1 km x 1 km grid on the landslide inventory map. From the analysis, there were 494 landslides distributed across the assessment years and by using the natural break classification, the landslide density map was classified into three classes of density, resulting low (1 landslide), moderate (2-3 landslides) and high (>4 landslides). Based on the landslide density analysis, there are 48 km2 that were identified as highly susceptible to landslide. Out of the high landslide density area, 46km2 were indicated as the most susceptible location for landslides due to the type of lithology that may lead to land sliding. This study indicates that the lithology played an important role as they can influence the geomorphologic process, and can induce landslides. As a conclusion, this study found that using the grid technique is an effective way to determine landslide density and detail investigation should be conducted to minimize the impact of landslide occurrences before any development could take place. 
Study The Application of Cleaner Production at Bukit Asam (Corporation) Tarahan Coal Terminal
Get PDFThe process of accumulation (stockpiling) and mixing (blending) of coal will produce coal quality in accordance with the specifications you want, but as a byproduct of coal sludge typically generated, air pollution, water pollution, self combustion and others. Efforts in maintaining the quality of the coal in the process of stacking and blending of coal is by revamping operations in unit coal loading port. Approach to the prevention of waste offers the highest level of protection to workers and public health, including the protection and conservation of the environment both locally and globally. The research was conducted in two stages: (1) the observation and study of the cleaner production of coal at the terminal level, and (2) study the implementation of cleaner production and recommended for coal terminal. The results get 14 cleaner production options that can be implemented in Bukit Asam (Corp), Tarahan Coal Terminal 1). Garbage collection on each carriage. 2). The use of water from the inlet / sea water using water tankers. 3). Returns coal to stockpile. 4). Repeated use of water for watering the operational area. 5). Watering the carriage before the reversal process. 6). Installation of water spray / sprinkle. 7). Returns runoff water which still contains coal to the stockpile. 8). Make a wall in the dock. 9). Use a vacuum cleaner cars. 10). Collecting coal before the reversal process then sold to be used again as a raw material coal briquette plant. 11). Making holes biopori. 12). Soon handle spontaneous combustion. 13). Using mask and ear plugs. 14). The use of air monitoring equipment. The investment costs required for the implementation of cleaner production Rp. 2. 677.000.000, - which payedback period for 1 month
KARAKTERISKTIK BACKSCATTER CITRA ALOS PALSAR POLARISASI HH DAN HV TERHADAP PARAMETER BIOFISIK HUTAN DI SEBAGIAN TAMAN NASIONAL KERINCI SEBLAT
Get PDFSynthetic Aperture Radar (SAR) is one kind of an active remote sensing system, utilizing microwave to records the earth surface. One of the SAR’s satellites is ALOS PALSAR which is capable of penetrating clouds so that the underlying objects can be identified. ALOS PALSAR has a polarization system operating with single beam polarization (HH or HV), dual polarization (HH + HV or VV + VH) and full polarization (HH + HV + VH + VV). This study aims to use the backscatter value of ALOS PALSAR's image for monitoring and mapping the forest. The Utilization of ALOS PALSAR imagery to measure forest biophysical parameters and saturation levels identified based on backscatter sensitivity. Image extraction is done through image calibration where the digital value is converted to sigma naught backscatter value then the result of calibration unit is changed to decibels. Backscatter sensitivity depends on forest structure which can affect scattering mechanism. The backscatter value is also influenced by humidity and weather dynamics which can also affect the dielectric constant. The result of accurate classification of land use polarization fall in HH accuracy of 62,4%. Whereas for HV polarization accuracy obtained equal to 74,88%.
 
ANALISIS KINERJA HIGH PRESSURE HEATER (HPH) TIPE SHELL AND TUBE HEAT EXCHANGER
Get PDFHeat exchanger is one of the supporting production equipment that move the heat energy from one of fluid to another fluid flow. One example of a heat exchanger in power plant industry is High Pressure Heater (HPH). HPH is high pressure feedwater heater that using hot steam turbine waste product used as heating medium before entering the economizer on boiler to reduce the work of boiler. This research was conducted to determine the effective efficiency of High Pressure Heater at Power Plant Industry. This efficiency determination is based on thermodynamics and heat transfer analysis with Log Mean Temperature Difference (LMTD) method and Number of Transfer Unit (NTU) method. The analysis is to determining the effective heat transfer, overall heat transfer coefficient (U), Effectiveness and the analysis of pressure drop (∆P). The analysis results obtained the efffective heat transfer of 37.013 kW, overall heat transfer coefficient (U) of 502,48, effectiveness of 0,47 and the number of pressure drop of 23.498,06 Pa
Tremor di Gunungapi Raung: Periode Krisis November-Desember 2014
Get PDFCrisis period of Raung Volcano, located in East of Java, Indonesia, was started in November 2014. The seismicity of Raung Volcano was dominated by volcanic tremor. Volcanic tremor can be related with internal process of a volcano and can be a fruitful tool to understand the physical process inside the volcano. The intensity of tremor event in early crisis period is low but increases quickly then followed by the continuous tremor in the next month, December 2014. The dominant frequency of Raung volcano has range 1 ± 0,2 Hz. We suggest that there are two resonators exciting tremor signal based on the number of peaks in Raung’s tremor spectrum
INDONESIAN ROAD DATA CENTER (IRODCO) FOR SUPPORTING SUSTAINABLE ROAD DEVELOPMENT
Get PDFOne of the problems on current road infrastructure development in Indonesia is the difficulty of getting road data information, for example is data for supporting sustainable road infrastructure development. Moreover, some of road authority did not realize that data is important element in the cycle process of road infrastructure development. Inaccurate road data will decrease the quality of road budgeting and programming, on the other hand it will affect the period service of road itself. The good road data could support sustainable road by providing the road value such as historical, current condition, and prediction. Indonesian Road Data Center Operations (IRODCO) is a concept of integrated road database storage. Collaborate data from Indonesian road authority (Ministry of Public Work and Housing, Ministry of Transportation, National Police and Local Government) can be stored, processed and managed to be a value- added information. IRODCO will provide various information, completely, easily and quickly for supporting the sustainable development of road infrastructure. This paper will explain the background of IRODCO concept, type of road database, the architecture, and how this concept will be implementing in Indonesia next, particularly for supporting the sustainable road infrastructure development
ANALISIS PROTEIN PADA TEPUNG KECAMBAH KACANG HIJAU (Phaseolus aureus L.) YANG DIKECAMBAHKAN MENGGUNAKAN AIR, AIR CUCIAN BERAS DAN AIR KELAPA
Get PDFNuts have long been known as a complementary source of protein with whole grains, such as rice and wheat. One of the many types of nuts that are widely available are green beans. Utilization of waste such as coconut water and rice washing water as an additional substance of the plant fertilizer needs to be improved given the high levels of nutrients that can be beneficial to the plant. This study aims to analyze the protein in wheat sprouts green beans (Phaseolus aureus L.) that germinated using the Water, Rice Washing Water and Coconut Water. Wheat sprouts green beans were analyzed qualitatively with the ninhydrin test, test Millon, and biuret test, then quantitatively analyzed by the Kjeldahl method includes the destruction process, distillation and titration. The results showed that Content of protein in wheat sprouts for wheat germination using water 28,50% w/w, protein content in wheat germination using washed rice water 31,19% w/w , and protein content in wheat germination using coconut water 32,06% w/w. The highest protein contained in wheat germ on the germination use coconut water 32,06% w/w
Critical Capabilities of Corporate Information Systems
Get PDFAbstract—this paper aims to identify the critical factors for evaluating the capabilities of corporate information system in Palembang from the perspective of the IT infrastructure and IT human resources competence. To fulfill these objectives of the study, this study adopts a conceptual framework that is developed by Antoni and Jie (2012). The framework consists of IT infrastructure quality and competence of IT human Resources, which are used as foundation of business operations in organizations. There is a need to develop their capabilities through the adoption of IT to enhance its performance and enhance their competitive position in the market place. IT capability is an organizational ability in effectively and efficiently using their IT resources, which can be determined by IT infrastructure, and IT human resource competencies. Findings indicate that there are many the critical capabilities of IT infrastructure and IT human Resource capabilities that can be utilized by organizations to develop their competencies in order to improve business performance. In Addition, the findings of the study would be of practical significance to the continuous improvement of organizational performance in Palembang and other cities in Indonesia.
 
The Priority of Infrastructure Development in Kabupaten Lampung Barat
Get PDFInfrastructure development is one of the important and vital aspect in order to accelerating the process of regional development. Infrastructure is also give an impact in improving the economy, accessibility, community development and the quality of human life. But, infrastructure development can’t be done simultaneously. Kabupaten Lampung Barat was designated by government as disadvantaged areas because of the lack on providing the infrastructure. Therefore, by using the analytical hierarchy process (AHP) this study is trying to find out the most important factor that affect the infrastructure development and the order of priority development of the five infrastructure in Kabupaten Lampung Barat, the infrastructure is: Roads, Drainage, Waste, Waste Water, and transportation. The AHP method revealed that the funding factor with the weight values 0,361, is the most important indicator that affect the infrastructure development in the study area. While, for the infrastructure, the AHP method revealed that roads infrastructure with weight values 0, 42, is the infrastructure which should be prioritized. Based on these result, the priority development of infrastructure in Kabupaten Lampung Barat is the provision of road infrastructure by increasing the capacity of the road and other road several indicators such as mobility and safety aspect